| 摘要 |
The invention relates to a method and system for broadband digital predistortion linearizaion, which used to overcome the influence of memory effect in the radio frequency power amplifier, to expand the digital predistortion linearizaion bandwidth, and to improve the digital predistortion linearizaion performance. The method and system, according to characteristic parameter of amplifier, can get the in band and out of band predistortion signal, and then the combined signals be inputted to power amplifier as input signal; A part of the output signal from the power amplifier can be the feedback signal, compare it to the original input signal, and according to the comparative result, characteristic parameter of amplifier of in band and out of band pedistortion signal be generated by adaptive adjustment, so that the waveforms or frequency spectrum of feedback signal and input original signal could be nearest.
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